тест на разрешение в наборе разрешений ACL (test for a permission in an ACL permission set)
Имя (Name)
acl_get_perm — test for a permission in an ACL permission set
Библиотека (Library)
Linux Access Control Lists library (libacl, -lacl).
Синопсис (Synopsis)
#include <sys/types.h>
#include <acl/libacl.h>
int
acl_get_perm(acl_permset_t permset_d, acl_perm_t perm);
Описание (Description)
The acl_get_perm() function tests if the permission specified by
the argument perm (one of ACL_READ, ACL_WRITE, ACL_EXECUTE) is
contained in the ACL permission set pointed to by the argument
permset_d.
Any existing descriptors that refer to permset_d continue to refer
to that permission set.
Возвращаемое значение (Return value)
If successful, the acl_get_perm() function returns 1 if the
permission specified by perm is contained in the ACL permission set
permset_d, and 0 if the permission is not contained in the
permission set. Otherwise, the value -1 is returned and the global
variable errno is set to indicate the error.
Ошибки (Error)
If any of the following conditions occur, the acl_get_perm()
function returns -1 and sets errno to the corresponding value:
[EINVAL] The argument permset_d is not a valid descriptor
for a permission set within an ACL entry.
The argument perm is not a valid acl_perm_t
value.
Стандарты (Conforming to)
This is a non-portable, Linux specific extension to the ACL
manipulation functions defined in IEEE Std 1003.1e draft 17
('POSIX.1e', abandoned).
Смотри также (See also)
acl_add_perm(3), acl_clear_perms(3), acl_delete_perm(3),
acl_get_permset(3), acl_set_permset(3), acl(5)
